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Text File  |  1997-02-01  |  1KB  |  33 lines
  1. In order to interfacea YEASU CAT SYSTEM to a RS-232 COM Port of a Computer. 
  2.  
  3.  DB25S (Computer side)                         DIN6 (TRCVR side)
  4.  
  5.                              | /-----------------       3 SI
  6.   2 TD      -----/////-------|<
  7.                   10K        | \   NPN 2N2484
  8.                                 V   ou equi.
  9.                                 |
  10.                               __|__
  11.  
  12.   7 GND     -------------------------------------       1 GND
  13.  
  14.                              
  15.   3 RD      ----------------\ |
  16.                   |          >|------//////------       2 SO
  17.   4 RTS  _        |         / |       10K
  18.   5 CTS  _|       |        V
  19.                   |        |    NPN 2N2484
  20.                   /      __|__   ou equi.
  21.                   /
  22.                   / 10K
  23.                   /
  24.   6 DSR _         |
  25.   8 CD  _|________|
  26.  20 DTR _|
  27.  
  28.  
  29. This is wired directly on the DB25S connector and is fitted in the cover 
  30. after some drops of epoxy.  You are now compatible with the CAT software 
  31. programs written for YAESU rigs.
  32.  
  33.